mccrerey



A. McCREREY.

TIMING GEARING.

APPLICATION FILED SEPT. 22. 1915.

3 9 1 95,247 I Patented Aug. 22, 1916.

3 SHEETS-SHEET I.

(Q 31mm uyffg Cra -g7 A. MCCBEREY- TIMING GEARIN G. APPLICATION EILED SEP'T- 22, I91 5 Patented Aug. 22, 1916.

3 SHEETS-SHEET 2.

A'. McCREREY:

TIMING GEARING. APPLICATION FILED SEPT. 22, 1915- l 1 95,241, Patented Aug. 22, 1916.

3 SHEETS-SHEET 3.

fnnnxannnn mocnnnnv, or nmwerna', KANSAS.

1,195,247. I Original application flied may 25 To all whom it may concern Be it known that I, ALEXANDER MOCREREY,

I a citizen of the United States, residing at Hiawatha, .inthe county of Brown and in theUnited-States, Serial No. 30,404 and of which this application is a division.

The motor plow is adapted to be steered,

by power derived from thesame motor utilized for propelling the implement, or machine, over the field. The steering in either direction may be determined in advance of throwing the gearing into action. This is effected by a setting mechanism under con? trol of theoperator'and a timing mechanism which is a'utomaticin its action after being started.

' .The present invention relates to thesettingand timing mechanisms and has for itsobject to providemeans which are under control of the operator to admitof setting the steering mechanism so as toturn the implement either to the right or. to the" left and, furthermore, toprovide independent means whereby the; power steering mecha-' nism'may be set in advance to. turn the implement to the required degree, the power mechanism being. automatic in its operation after being tripped to effect the steering and v to'return the steering mechanism to normal position.

With these and other objects in view.

which will readily appear as the nature 'of the invention is better understood, the same: consists in the improved construction and novel arrangement and combination .of

.parts which will be hereinafterfully de-. scribed and particularly, claimed. w I

has-been In the accompanying drawings illustrated a sim .le and preferred .form of the invention, it. eing, however, understood that no limitation is necessarily made-tothe precise structural details therein exhibited, but that changes, alterations :and modifications within'the scope of the invention as* l claimed maybe resorted to when desired. v Referringto the',drawings,-Figure 1 is tlcally dISPOSed Shitft 154.. The shaft 154. 11a

TIMING-(HEARING.

Specification of lietters Patent. Patented Aug; 2 2,

1915, Serial No.'80,404. Divided and this a 1915. Serial 80. 51,957.

' aview in elevation of thd setting and timng gearmg embodylng the inventiomsh'owing the same in cooperative relation with the power and steering gearing;. Fig. 2 is a detail view showing more clearly the gearmg between the power actuated and the timing gears; Fig. 3 is aplan view ofthe gearng shown in Fig. 1; Fig. 4 is a detail view 1n perspective 'of the clutch by means'of which the power operated steering mechanism is thrown into action showing the trippingmechanism associated therewith; Fig.

pplication med September as.

5. is a detail view of the power actuated steering gearing showing the timing and tripping "gearing in cooperative relation therewith; Fig. 6 is a sectional view of the timing gear; and the setting mechanism associated therewith. I

Corresponding and'like parts are referred tojin the following. description and indicated in all the views of the drawings by the same referencecharacters.

- It is-to be understood that the partsare suitably mounted and disposed to cooperate in the manner set forth in the parent application herein identified.

Theshaft 11 is connected with the m0tor,-

not shown, to be. driven thereby. A bevel gear 138 loose upon the drive shaft 11 is m mesh with a bevel gear wheel 137 secured to a vertically disposed shaft 136.

Upon .the drive shaft 11-is splined a clutch member 168-which is adapted to be thrown into and out of engagement with a clutch member 169 formed with the gear wheel'138. When'the'clutch member 168 is moved to a position clear of the clutch member 169 the machine may be steered by hand and the power steering. mechanism thrown out of" action. When "the clutch member 168 is moved into clutched engagement with the gear 138 the power steering mechanism is thrown into action t'o-turn the machine to the right or to the left accord ing to which gear. wheels are thrown into operative position. A shipper lever 170 is secured at one endStoa frame bar and its opposite; end is forked and engages the .clutch member 168. The shipper lever 170 is resilient and normally exerts a pressure to hold the clutch'member 168 into clutched engagement with the'geari138. This tendency of the shipper lever 170 is overcome by means of anrm 17 lproje cting from a veris mounted an a bracket 172 so as to receive both a rotary and a vertical movement. An J expansible helical spring 173 mounted upon the shaft 154 is confinedbetween-an arm 153 and the lower member of the bracket 172 and normally tends to hold the shaft 154 elevated with the arm'153 in the plane of a stop 152 depending from a gear wheel 144 which is designated as the timing geanNLIhe shaft 154" is adapted to be depressed by means of a-shaft 174 which extends trans versely of the machine and is provided in" its length with a crank portion 175 adapted V .to be actuated by'means of a manually opera'ble part, not shown. The inner end of the shaft 174 is bent or formed with a lateral extension 176 which projects into the path of an extension of theshaft 154 and wh1ch extension preferably constitutes a projection of the arm 153. The operation of these parts will be more fully described hereinafter.

A vertical shaft 125-is provided at its lower end witha gear wheel.126 which is in mesh with a pinion 127 secured to a shaft 44 which is connected with the steering wheels, not shown, and adapted to be reversely driven by means of the motive power. A pinion 128 is secured to the upper end of the shaft 125. A pinion 129 is secured to thelower end of theshaft 125. A

- be positively actuated and impart a .corre-' rack bar 130is arranged to engage the teeth of the pinion 128. -A rack bar 131 is disposed to engage the teeth ofthe pinion 129.

These rack bars 130 and 131 are adapted to sponding-rotary movement to the shaft 125. The rack bars 130 and 131 are disposed upon opposite sides of the shaft 125-and are arranged so tliat only one rack bar at a time engages a pinion, hence, the shaft. 125 is adapted to. be turned in one direction or the other upon a, rack bar transmitting movemeht thereto through the cooperating pin- 45' ion. The rack bar 131 is connected at one end to the crank portion 133 of the shaft 132. The rack bar 130 is connected at one end to a wrist pin 135'attached to a gear wheel 134 securedto the shaft 132. These rack bars are adapted tobe moved simultaneously to throw one rack bar into engagement with one of the pinions 128 or'129 and at thesame time to throw the otherrack bar. :out of engagement with the rem'ainin pinion. Movement of the rack bars is e ected I by means of a bar 185 which has connection therewith and which extends-withinronvenientreach of the operator to be actuated when it is required to throw the-steering mechanism into action; Movement-of the bar 185 in one direetionthrows the rack bar 131 into engagement with the pinion 129 and at the same tlme moves the rack-bar 130 out of engagement with thepinion'128. A reverse movement of the bar 185 throws the rack bar 130 out of engagement with the pinion "128-andthe rack bar 131 into engagement with the pinion 129. Inasmuch as the shaft 125 is geared to the steering shaft 44 the latter will be driven in one direction or the other. according to which one of the rack bars is thrown into engagement with the cooperating pinion on the shaft 125.

The shaft 132 -is vertically disposed and provided with the crank portion 133 in any manner and'the gear wheel-134 is attached to the upper end'of such shaft 'so as to rotate therewith. The shaft 136 is vertically dis- 'posed .and provided with gear wheels 139 and 140 which are "secured thereto. The gear wheel 139 is in mesh with'the gear wheel 134 whereas the gear wheel 140 is in mesh with the gear wheel 141 mounted upon a shaft 142. A gear wheel 143 mounted upon the shaft 142 is connected with the gear wheel 141 to rotate therewith and is in mesh with a timing gear 144. 'The gear.

gear wheel-134 at certain times. The gear 'wheel 134 is provided with projections 146 and 147 upon its underside to engage with y a projection 148 of the timing gear 144. The timing gear144 has a part of its toothed ortion cut away, as indicated at 149; therey permitting of the gear wheel 143 to rotate without imparting any movement to the gear wheel 144 when the latter occupies a position with the space 149 opposite the gear wheel 143. The gear wheel 134 is provided with projections 150 and 150 which are adapted to be engaged by means of a spring detent'151, thereby holding the gear wheel 134 in a predetermined position during cer-- tain stages ohmcvement of the steering mechanism. The timing gear 144 is formed I upon-its underside with a stop 152 which is adapted'to be engaged by an arm 153 secured to the vertically disposed shaft 154. The timing gear 144 is also provided with a stop 155 whioh is adapted to be engaged a finger 158 which is adapted to be adjusted 'by a spring detent 156 to hold such'timing gear in a given position. The timinggear 144 is provided upon its upper side with a 12 0 plurality of teeth 157 which cocperate with I and set to regulate the degree of movement finger 158 is loose upon the shaft 159'upon has a rear extension 160 which is adapted to be engaged by a vertically movable sleeve 161 mounted upon the shaft 159. The rear extension 1600f the iinger 158 inclines upof the front and rear steering wheels. The

. which the timin gear 144 is mounted and wardly away from the" lane of the gear 144 so as tobe engaged an depressed when the sleeve 161 is lowered, thereby rocking the finger 158 and disengaging its outer end from the teeth 157. Ears 162 project upwardly from the finger 158 and are adapted to engage a finger 163 projecting outwardly from the sleeve 161 so that rotation of the sleeve 161 will effect a corresponding turning of the finger 158 whereby the samegnay be set with reference to the-teeth 157 of the timing gear 144. The finger 163 projects from opposite sides of the sleeve 161 thereby admitting of its rear end engaging the rear extension 160 of the finger 158.

The sleeve 161 isadjustable vertically .and rotatable at the will of the operator and is provided at its upper end with a gear is mounted both to slide. and turn. The

shaft 166 extends preferably in a diagonal direction across. the machine and terminates within convenient reach of the operator so that the shaft may be manipulated to set the steering mechanism for automatic operation by" the motive power. Rotation of the shaft 166 in one direction lowers the sleeve 161 and efiects'a tilting of the finger 158 whereby the same is disengaged from the teeth 157 and brought into locking engagement with the finger 163 by causing the ears 162 to project along opposite sides of the I finger 163; It will thus' be understood that tlfe initial movement of the shaft 166 resultsin disengagement of the finger 158 from the timing gear 144 and the engagev ment of such finger with'the finger 163. The second movement'of the'shaft 166 is longitudinal whereby the sleeve 161 is rotated to bring the finger 158 inthe desired position with reference to the timing gear 144 according to the required degree of turning of the machine when steering the same.

After the finger has been brought to therequired adjusted position the shaft 166is rotated in the reverse direction, thereby liftingthe sleeve 161 and admitting ofthe outer end of the finger 158 dropping into engagement with certain teeth 157. When the sleeve 161 is elevated it is retained in place by means of a spring catch 167 which is at tached to the upper end of the bracket 167 in which the upper end. of the shaft "159 is mounted. The setting of the finger 158 detel-mines the degree of turning'of the steering wheels of the machine.

. When it is required to throw the power steering mechanism into gear the manually operated part, not shown, is actuated to impart a rotary movementto the shaft 174. ThlS movement is such as to depress the shaft 154 by causing the extension 176 to press upon the pro ection 153.

Under normal conditions the power actuated steering mechanism is disconnected from the motor by means of the clutch which, as stated, is effected by means of the shipper lever 170 and the arm 153 and cooperating stop 152. When it is required to throw the power steering mechanism into gear the shaft 174 is turned as just stated, in a direction to bring the arm or projection 176 into action was to depress the shaft 154, thereby moving the arm 153 away from the stop 152. This releases the shaft 154 which is turned by the action' of the resilient shipper lever 170 which results in throwing the clutch into engagement and the power steering mechanism into action.

The return movement of the shaft 154 to its given position brings the arm 153 into the plane of the step 152 so that in the final movement of the timing gear 144 in the manner hereinafter stated the stop 152 will engage the arm'153 and turn the shaft 154 so as to bring the arm '171 thereof into operative engagement with the shipperlever 170 to throw the clutch member 168 so as to effect disengagement of the clutch and a throwing of the power steering mechanism out of actlon.

The gear 143 for operating the steering mechanism normally occupies the relation illustrated most clearly in Fig. 5, that is with one tooth in mesh with a tooth of the timing gear 144 adjacent the space 149 The stop 148-of the timing gear 144 is at one side of the stop 147 of the gear wheel 134. When the clutch member 168 is thrown into engagement with the gear Wheel 138 the shaft 136 is set in motion .in the direction indicated by the arrow, thereby moving the timing gear the distance of one tooth and bringlng the gear wheel 143 opposite the :space 149. At th'e same time the stop 148 engages with the stop 147 and moves the gar wheel 134 a distance suflicient to bring the toothed portion at one side of the space 145 into mesh with the gear wheel 139, thereby rotating the gear wheel 134 and the shaft 132 and operating the rack bars 130 and-131 with the result that theshaft 125 is rotated in one direction or the other ac-' cording to which one of the rack bars is in engagement'with' the gear wheels 128 or 129. The gear wheel 134 makes a half revolutiom' thereby bringing the space 145 opposite the gear. wheel 139, the gear wheel 134 being held in the adjusted position by means of the springdetent 151 engaging the stop 150. When the gear Wheel 134 has moved to bring the space 145 opposite the gear wheel 139 the gear. wheel 134 comes to rest and. the stops 146 and '147 will have ex changed positions. Preliminary to the stop-" 1 ping ofthe gear wheel 134 the stop 146 engages the sto 148 of the timing gear 144 and moves the' latter to throw the space 149 the toothed portion of the gear wheel 134.in I

meshwvith the' gear wheel 139 whereby the gear wheel 134 is returned to normal position resulting in the resetting of the steer- 7 mg mechanism. During this operation the timing gear 144 continues to rotate until the stop 152 is brought in contact with the arm 153 and turns the shaft 154, thereby bringing the arm 171 in engagement with the spring shipper 170 by means of which the clutch 168 is disengaged from the gear 138, thereby throwing the power steering mecha' nism out of action. The timing gear 144 comes to rest with the stop 155 engaged by the detent 156 and with a toot 1 of the timing gear at one side of the space 149 in mesh with the gear 143. The direction of the steering is under control by movement of the bar 185 in the manner stated so as to throw one or the other of the rack bars 130 and 131 into engagement with the cooperatmg gear wheel according to the desired rotation of the shaft 125 to be effected.

- Having thus described the invention, what is claimed as'new is I 1; A steering mechanism comprising shiftable gearing under control of the operator to admit of steering either to the right or to the left, an operating gear having the shiftable members connected thereto for operation, a power actuatedmemben'and connecting gearing between the power actuated member and the operating gear including an operating member movablelongitudi nally and jpivotally and having engagement with the axially'movable and rotative mem ber for imparting the 'two movements thereto. 1

4. In steering mechanism, 'an operating gear, a timing gear, connecting means .between the. operatm cluding'a gear element mounted to receive longitudinal and rotative movement, and a and timingfgears, a settmg mechanism or the timing gear in-- rack bar having engagement 'with the gear element and mounted to receive a pivotal and a longitudinal movelnent whereby said gear element may be moved longitudinally and rotatively. I I

mounted to receive a longitudinal and'a rotary movement and adapted to disengage the finger from the timing gear andfurther adjustment thereof, a rack bar engaging the gear element and adaptedto move the same longitudinally and rotativel and means for holding the gear element w en moved. away from the 'said finger.

6. In steering mechanism, an operating gear, a timing gear, connecting means between the two gears, 'a finger mounted to receive a rocking and a turning movement and adapted to engage "the timing gear in the normal adjusted position thereof and to engage and impart a movement to the operating gear, a gearelement movable longitudinally and rotatively and adapted to engage the finger to move the same to an ad' j usted position, and a rack bar under control of the operator and having engagement with the gear element to eifect longitudinal and rotary movement thereof. I

7 In steering mechanism, an operating gear, a timing gear, connecting means between the two gears, a power shaft, gearing between the power shaft and timing and operating gears, the same including a clutch, a shipper member for the clutch, connected arms, one adapted to engage the shipper member to normally hold the same in restraint and the other adapted to engage the stop of the timing gear to be moved thereby for throwing the steering mechanism out of action, and means under control of the operator for tripping the arms'to efi'ect release of the timing gear and shipper member Wherebythe steering mechanism is thrown into action. I

8'. Insteering mechanism, an operating gear, a timing gear, connecting means between the two ears, a setting mechanism under control o the operator for determin- 13o ing the degree of action of the timing gear,

. a power shaft, gearing between the power the timing wheel and shippermember Whereby the steering mechanismis thrown into v gear.

9. In "steering mechanism, the combination of a'timing gear having a portion of its teeth omitted to providea space, an operating gear having oppositely disposed spaces formed by omission of the teeth, stops between the timing and operating n L gears, connected gears for lmpartlng movement to the timing and operating gears and adapted to engage the spaces thereof, means for holding the operating gear when its space comes opposite the driving gear, a setting mechanism' mounted upon the timing gear 'for throwing the operating gear into action, a power shaft, gearing between the power shaft and the beforementioned gears including a clutch, a vshipper member for the clutch, connected arms normally holding the shipper member in restraint and engaging the timing wheel, and operating means for effecting release of the shipper member and timing wheel to admit of throwing the steering mechanism into gear.

10. Steering mechanism including rack bars, cooperating gears, means for throwing either; one of the rack bars into engagement with its cooperating gear, a shaft having the.

rack bars coupled thereto by means of a crank connection, a power shaft, a clutch for throwing the power shaft into and out of action, a shipper member for the clutch, operating means for the shipper member including a shaft having projections, one of.

which is adapted to coact with the shipper member, an operating member, and a stop carried by the operating member to ngage with another projection of the sha t and arrest the operation of the parts.

In testimony whereof I atfix my signature.

ALEXANDER MCCREREY. 1,. 5. 

